mirror of https://github.com/CesiumGS/cesium.git
44 lines
1.4 KiB
JavaScript
44 lines
1.4 KiB
JavaScript
import defined from "../Core/defined.js";
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/**
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* Return the `MetadataClassProperty` from the given schema that
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* matches the given description.
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*
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* If the given schema is `undefined`, then `undefined` is returned.
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* If the given `schemaId` is defined but does not match the ID
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* of the given schema, then `undefined` is returned.
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* If the given schema does not have a class with the given name,
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* or the class does not have a property with the given name,
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* then `undefined` is returned.
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*
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* Otherwise, the `MetadataClassProperty` is returned.
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*
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* @param {object} schema The schema object
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* @param {string|undefined} schemaId The ID of the metadata schema
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* @param {string} className The name of the metadata class
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* @param {string} propertyName The name of the metadata property
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* @returns {MetadataClassProperty|undefined}
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* @private
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*/
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function getMetadataClassProperty(schema, schemaId, className, propertyName) {
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if (!defined(schema)) {
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return undefined;
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}
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if (defined(schemaId) && schema.id !== schemaId) {
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return undefined;
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}
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const classes = schema.classes || {};
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const metadataClass = classes[className];
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if (!defined(metadataClass)) {
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return undefined;
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}
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const properties = metadataClass.properties || {};
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const metadataProperty = properties[propertyName];
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if (!defined(metadataProperty)) {
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return undefined;
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}
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return metadataProperty;
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}
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export default getMetadataClassProperty;
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